Design and interfacial behavior of two series of gemini amphiphiles with different charge positions based on imidazole moiety
文献类型：期刊论文
| 作者 | Zhai, XD; Liu, MH |
| 刊名 | JOURNAL OF COLLOID AND INTERFACE SCIENCE
 |
| 出版日期 | 2006-03-01 |
| 卷号 | 295期号:1页码:181-187 |
| 关键词 | Gemini Amphiphile Monolayer Langmuir-blodgett Film Supramolecular Chirality |
| ISSN号 | 0021-9797 |
| DOI | 10.1016/j.jcis.2005.07.059 |
| 英文摘要 | Two series of gemini amphiphiles based on 2-heptadecylimidazole were designed. One is exo-BisImC17Cn (n = 2, 4, 6, 8, 10), in which the positive charges are positioned on the outsides of the headgroups. The other is endo-BisImC17Cn (n = 2, 4, 6, 8, 10), whose positive charges are localized on the insides of the headgroups. The interfacial behavior at the air/water interface of these gemini amphiphiles was investigated in relation to the effect of the charge position and the spacer length. Monolayers of exo-BisImC17Cn show small differences in interfacial behavior when spread on water and aqueous Na2SO4 subphases. In contrast, significant distinctions were observed for molecules of endo-BisImC17Cn. The limiting areas of endo-BisImC17Cn monolayers on water are obviously larger than those on the aqueous Na2SO4 solution. While the limiting areas of the exo-BisImC17Cn monolayers increased monotonically with the spacer length, those of the endo-BisImC17C10 monolayer on Na2SO4 solution is obviously smaller than those of etido-BisImC17C6 and endo-BislmC17C8 monolayers, suggesting the wicket conformation of the alkyl chain in endo-BisImC17C10. On the other hand, both of the gemini amphiphiles could form complex monolayers with negatively charged TPPS at the air/water interface. The transferred complex multilayer films of the gemini amphiphiles/TPPS showed supramolecular chirality, although both of the gemini amphiphiles and TPPS are achiral. The exciton couplet was observed for the endo-BisImC17Cn/TPPS films, while no couplet was detected for the exo-BisImC17Cn/TPPS films. A reasonable comparison between the two series of geminis in relation to the effect of charge positions and the spacer lengths on the interfacial behavior and the supramolecular chirality was performed. (c) 2005 Elsevier Inc. All rights reserved. |
| 语种 | 英语 |
| WOS记录号 | WOS:000235098700023 |
| 出版者 | ACADEMIC PRESS INC ELSEVIER SCIENCE |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/60203]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Liu, MH |
| 作者单位 | Chinese Acad Sci, Inst Chem, Key Lab Colloid & Interface Sci, Ctr Mol Sci, Beijing 100080, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhai, XD,Liu, MH. Design and interfacial behavior of two series of gemini amphiphiles with different charge positions based on imidazole moiety[J]. JOURNAL OF COLLOID AND INTERFACE SCIENCE,2006,295(1):181-187. |
| APA | Zhai, XD,&Liu, MH.(2006).Design and interfacial behavior of two series of gemini amphiphiles with different charge positions based on imidazole moiety.JOURNAL OF COLLOID AND INTERFACE SCIENCE,295(1),181-187. |
| MLA | Zhai, XD,et al."Design and interfacial behavior of two series of gemini amphiphiles with different charge positions based on imidazole moiety".JOURNAL OF COLLOID AND INTERFACE SCIENCE 295.1(2006):181-187. |
入库方式： OAI收割
来源：化学研究所
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